The data in the keychain item can be accessed only while the device is unlocked by the user.
Mac Catalyst 13.0+Beta
This is recommended for items that need to be accessible only while the application is in the foreground. Items with this attribute do not migrate to a new device. Thus, after restoring from a backup of a different device, these items will not be present.
The data in the keychain item can always be accessed regardless of whether the device is locked.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.